function wp_initialize_theme_preview_hooks() {
  if ( ! empty( $_GET['wp_theme_preview'] ) ) {
    add_filter( 'stylesheet', 'wp_get_theme_preview_path' );
    add_filter( 'template', 'wp_get_theme_preview_path' );
    add_action( 'init', 'wp_attach_theme_preview_middleware' );
    add_action( 'admin_head', 'wp_block_theme_activate_nonce' );
  }
}